Paddle Switches
Each paddle switch has 3 connections; ground, illumination Pulse Width Modulation (PWM) supply and switch signal.
Pulling the LH downshift paddle ( - ) provides down changes and pulling the RH upshift ( + ) paddle provides up changes. The first operation of either paddle, after Sport mode is selected, puts the transmission into permanent manual 'Jaguar Sequential Shift' mode. Movement of the selector lever back to the 'D' position, returns the transmission to conventional automatic operation. To reselect Sport mode from Manual mode, the selector lever must be first moved to the 'D' position and then returned to the 'S' position.
Temporary operation of manual mode can also be operated with the selector lever in the 'D' position. Operation of either the upshift or downshift paddles activates the manual mode operation. The current selected gear will displayed in the instrument cluster message center. If continued use of manual mode is required, move the selector lever to the 'S' position.
With the selector lever in the 'D' position, temporary manual mode will be maintained whilst the driver is accelerating, decelerating, cornering or continuing to request shifts via the paddles. The transmission will revert to automatic operation after a short period of driving at steady speed. Alternatively the RH upshift ( + ) paddle may be held for approximately one second to return directly to automatic operation in 'D'.
Selector Lever
The selector lever is located in a slot in the rotary disc which rotates with movement of the lever in the forward or back directions. The disc movement positions magnets located on the disc which are detected by Hall sensors located on the selector PCB which correspond with the different selector positions. The Hall sensors produce a signal relative to the lever position which is passed as a high speed CAN bus message to other system modules.
When the switch is operated, a ground for the switch contacts is completed via a resistor. The completed ground signal is passed via a hardwired connection to the steering wheel module. The module converts the switch signal into a Local Interconnect Network (LIN) bus message which in turn is passed to the instrument cluster, via the steering wheel clockspring. The instrument cluster converts the LIN message into a high speed CAN bus message which is broadcast to the TCM and other system modules.